Kinski

Professor Paris Catalano goes to Venice to investigate the last known appearance of Nosferatu during the Carnival of 1786. Catalano seems to think that the vampire is searching for a means to put an end to his torment and actually be dead. He stays with a family who, legend says, has the vampire trapped in a tomb in the basement. After a séance "the vampire" appears and then it becomes a question of how do you put the evil back into the box.

A group of skiers on the Swiss Alps fall into a chasm opened during an avalanche. Inside, they find a metal mask of some sort, but more digging reveals a body hidden under the ice, the body of an executed witch, buried in the ice for centuries. Another avalanche seals them in. As they begin exploring this cavernous pit in the snow, they discover a strange underground city buried in the ice and snow, the same place the witch was executed. From then on, witch tries to avenge her death, possessing members of the ski group.

In a psychiatric clinic for rich women, dies murdered, one after another, a nurse and two patients, while an arrow hit another woman. The guilty is a masked man. The police decide to set up a trap, but the line of murdering isn't still over.